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Influence of the phase uncertainty in spherical wave expansion in the millimeter-wave range

 
: Polaczek, A.C.; Gemmer, T.M.; Heberling, D.

:

Institute of Electrical and Electronics Engineers -IEEE-; Antenna Measurement Techniques Association -AMTA-:
41st Annual Symposium of the Antenna Measurement Techniques Association, AMTA 2019. Proceedings : October 6-11, 2019, San Diego, California, USA
Piscataway, NJ: IEEE, 2019
ISBN: 978-1-7281-3001-9
ISBN: 978-1-7281-4527-3
ISBN: 978-1-7281-4525-9
S.141-144
Antenna Measurement Techniques Association (AMTA Annual Meeting and Symposium) <41, 2019, San Diego/Calif.>
Englisch
Konferenzbeitrag
Fraunhofer FHR ()

Abstract
Phase uncertainty in antenna measurements introduces significant errors to the amplitude of the transformed pattern in Spherical Wave Expansion (SWE). To get a better understanding of the impact of phase errors, the measured phase error of a Low Noise Amplifier (LNA) is synthesized as a random phase error and subsequently added to the measured antenna patterns of three different antennas during the SWE. The resulting erroneous patterns are compared with the measured reference patterns and the error magnitude and probability distribution are studied. It is proven that the introduced errors to the transformed far-field patterns can be substantial. Furthermore, the relation between the antenna type and the error level and distribution is elaborated. The error level is different for the three antennas and the error level distribution is dependent on the mode spectra of the antennas.

: http://publica.fraunhofer.de/dokumente/N-624856.html